<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <input type="text" v-model="msg">
        {{msg}}
        <comp></comp>
    </div>
    <script src="./node_modules/vue/dist/vue.js"></script>
    <script>
        Vue.component("comp", {
            template: '<div>{{person.name}}<input type="text" v-model="person.name"> </div>',
            data(){
                return {
                    num: 123,
                    person: {
                        name: "abc"
                    }
                }
            }
        })

        var vm = new Vue({
            el: "#app",
            data: {
                msg: "hello"
            }
        })
    </script>
</body>

</html>